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Technical Notes

A study on the evaluation method of crack resistance of recycled asphalt pavement

재활용 아스팔트 포장의 균열저항성 평가 방법 조사 연구

Kyu-dong Jeong1*
,
Kwang Woo Kim2
정 규동1*
,
김 광우2
1Senior Researcher, Korea Institute of Civil Engineering and Building Technology
2Professor, Department of Infrastructure Engineering, Kangwon National National University
1한국건설기술연구원 인프라안전연구본부 수석연구원
2강원대학교 지역건설공학과 교수
* Corresponding Author
30 June 2020. pp. 117-128
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Abstract

The crack resistance evaluation test of recycled asphalt mixture was studied. Fatigue crack or temperature crack in asphalt mixtures are associated with the stiffness of asphalt binder. Indirect tensile strength (IDT) and toughness, which are the criteria for domestic recycled asphalt mixtures, are not suitable for evaluation of crack resistance and need to be improved. Direct tensile testing, Disk shaped compact tension (DC(T)) and Fenix, are highly affected by the stiffness of the asphalt mixture, making it difficult to apply as a criterion. The OT (Overlay Test), which is a repetitive fatigue test, is suitable for crack resistance evaluation, but it is necessary to improve the test method in order to increase consistency.

Keywords
Crack resistance
Recycled asphalt pavement
IDT
DC(T)
OT
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Information
  • Publisher :KOREAN ASPHALT INSTITUTE
  • Publisher(Ko) :한국아스팔트학회
  • Journal Title :Journal of the Korean Asphalt Institute
  • Journal Title(Ko) :한국아스팔트학회지
  • Volume : 10
  • No :1
  • Pages :117-128
  • Received Date : 2020-06-03
  • Revised Date : 2020-06-14
  • Accepted Date : 2020-06-22
  • DOI :https://doi.org/10.22702/jkai.2020.10.1.011
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